Finding the Fourth Proportional to 83,647.89, 115,423.79 and 49,657.05

Step by Step Solution

1. Step 1: Write the proportion equation
   83,647.89 : 115,423.79 = 49,657.05 : x
2. Step 2: Convert to fraction form
   83,647.89/115,423.79 = 49,657.05/x
3. Step 3: Cross multiply
   83,647.89x = 115,423.79 × 49,657.05
4. Step 4: Simplify right side
   83,647.89x = 5,731,604,662.93
5. Step 5: Solve for x
   x = 5,731,604,662.93/83,647.89
6. Step 6: Final answer
   x = 68,520.61